If the KH Manager will show a warning on its display screen if it detects a potential abnormality with the pH probe or the drip sensors / reagent being added during a test.

A pH probe error displayed directly after successful calibration of the pH probe will generally clear automatically after the next successful pH/KH test and no action needs to be taken. This is usually a result of the machine detecting two different pH levels in quick succession causing a false warning to be flagged. If the error does not clear on the machines display after a test has been completed then turn the machine off at the mains socket, wait 10 seconds then power back on. After rebooting the error should have cleared.

A pH error that shows part way through a test could indicate the probe needs cleaning, calibrating, the probe has been damaged or the probe has expired and will need replacing. To clear the error check the probe for these possibilities and then perform a pH/KH test to clear the error.

To see instructions on cleaning and calibrating the pH probe click HERE.

To see instructions on inspecting the pH probe for damage click HERE.

Drip sensor errors are usually a result of the sensors not being able to detect drips of reagent falling into the beaker during a test. In the app it will give you the option to confirm the test reagent tube type you have and the sensor type followed by the option to clear the error. Follow the in-app instructions to do this making sure that you chose the correct options for your machine, alternatively correcting the reason for the error and then performing a successful pH/KH test will clear the error.

If the drip sensor error is shown check the below for a possible reason before clearing the error as described above.

• Check the reagent bottle is not empty and that there are no air bubbles in the reagent line.
• Check the Drip sensor nozzle is in position properly, not blocked and that the KH Manager is sitting on a level surface so that the drips fall between the sensors.
• Check the drip sensors are clean and free of deposits and that they are not wet.